Lead for measuring depths.



No. 707,599." Patented Aug. 26, I902;

' E. KRUMHDFF.

LEM! FDR MEASURlNG DEPTHS.

(Appl 12 fil d b 7 1902) (No Mo dal.)

, [.llvlllll. 5 .m 6 b UNITED ST Tas 'FFECE.

PATENT ERNST KRUM-I-IOFF, OF QONTRA, GERMANY.

LEAD FOR MEASURiNG DEPTl-EES.

- SPECIFICATION forming part of Letters Patent No. 707,599, dated August 26,, 1902.

Application filed February '7, 1902. Serial No. 93.056- (No model.)

uring depths, especially deep seas; and the.

objects of the same are, first, to prevent the loss of time by fetching up the sounder from great depthsfor the purpose of fixing another weight on it; second, to measure the rope that has run out independent, as well as selfacting, from the'attendant, and, third, to obtain this measurement with ex ctness without loss of time and material. attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a vertical view of the entire apparatus, leaving away the electromagnet hand arrangement in order to more distinctly perceive the counter as such;- Fig. 2, the horizontal section through the counter; Fig. 3, a vertical section of the upper part of the lead weight. The circuit-closers are represented by bent metal strips 17, from which wires (represented by dotted lines) go till theyunite with the rope 2 through the waterproof socket 14. Fig. 4 shows a scheme of the course of the electric current and of the function of the whole apparatus. v

' Similar figures refer to similar parts throughout the several views.

1 is a steam-winch of any suitable construction-namely, with steam-cylinders 24 25, connecting-rods 26 27, crank 28, and drum 3- which winds the rope 2 on its drum 3. The rope. 2 goes over a guide-pulley 4, which can be moved along on its shaft 5 and turns the same by the spline 6. The movement of this shaft 5-is transferred in a suitable manner to a counter 7. The hand 8 of this counter is grasped by a U-shaped claw 9' of another hand 9, which is independent of the counter 7, whose movable axle shaft carries an iron plate 10, opposite whichstands an electromagnet 11, which attracts the plate 10, shaft,

and hand 9 to anyposition it may stand. .By

this the U-foimed claw 9 becomes free of the hand 8 of counter 7, and hand 9 is not drawn along any more by it. The rope 2 then passes over the pulley 12 and carries finally the lead weight 13. Rope 2 has also some electric wires twisted in it. These are conducted through a waterproof socket 14 and channels 15 into the upper part 16 of a vertical hole in v the lead weight 13, where they are connected to contact-springs .17 and 18. The hole 16 does not go right through, but is closed inits upper part, while below it is wider and shut with a bored nut-screw 19. Through this nut-screw a piston 20 pushes itself, provided with a ring 21 to prevent its falling out and a platedike part at the end, so that it cannot be pressed into the I ground at the bottom of the sea when the lead reaches it. Thetop part of the piston 20 slides upward into the narrow hole 16 when the lead touches the ground and the whole bodyof the lead weight 13 falls farther. By this the contact-springs 17 close an electric current which sets a ringing ap paratus 23 in motion, and thus the attendant at the winch and the observer of'the lead receive the signal that the bottom is reached. While 13 falls farther the piston 20 closes also the other contact 18, whereby the free hand 9, as above described, is lifted up from the hand 8, that counts and shows exactly the length of the rope which has run out while the rope still may be in motion. By winding the rope on "the drum 3 of the winch the body of the lead rises from the bottom and the piston 20 falls downward, by which the contacts 17 and 18. fall out of action, the ringing apparatus on board is silent, and the hand 9 can be pushed again over-the hand 8 of the counter 7, because the electromagnet 11 is also out of action. Thus a continual control is given over the apparatus. The contact of the electrical wires on board with the electric wires of the rope can be accomplished in the usual way.

What I claim as my invention, and desire to secure by Letters Patent, is

1'. The combination, in a sounder for measuring depths, of a lead'weight having a hole lengthwise and inside contacts, with a movable piston provided with a plate-like end, the said lead weight secured to a-rope having electric wires, an electrical ringing apparatus and an electromagnet, in connection with said wires, a counter operated. by the aforesaid eieotmmagnet all as shown and de- I claw graspingover the hand of the counter scribed. all as and for the purpose set forth. To 2. The combination, in a. sounder for deep- In witnegs whereof I have hereunto set my sea measuring, of Mead Weighthavinga movhand in "presence of two witnesses.

able piston and inside contacts, with-a counv ERNST .KRUMHOFF.

tor for the length of rope run ont, having an Witnesses:

electromagnet and an armature consisting of JULIUS GERHOLD,

an iron plate attached to a, hand having a RUDOLF WEHR. 

